Kiln.



C. HOOK.

KILN.

APPLICATION FILED 00T. 25, 1911.

Patented sept.3,1912.

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- C. HOOK.

KILN.

APPLICATION FILED 00T. 25, 1V91]. l

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CURNEALUS HOOK, OF VIGO, OHIO.

KILN.

Specification of Letters Patent.

- Patented Sept. 3, 1912.

Application led October 25, 1911. Serial No. 656,627.

Zh all 107mm 'it may concern.'

Be it known that I, OURNnALUs Hoon, a citizen of the United States, residing at Vigo, in the county of Ross and State of Ohio, have invented new and useful Improvements in Kilns, of which the following is a specification.

This invention provides a kiln designed chiefiy for burning clay products, the purpose being economy in construction and in the consumption of fuel besides providing ample iioor space for receiving the ware to be burned and enabling the kiln to be easily manipulated as well `as to insure a uniform burning of the articles and prevent cracking or over burning.

The invention consists of the novel features, details of construction and combination of parts, which hereinafter will be more particularly set forth, illustrated in the accompanying drawings, and pointed out in the appended claims.

Referring to the drawings, forming a part of the specification, Figure l is a vertical central section of a kiln embodying the inT vention taken on the line mof Fig. 2. Fig. 2 is a horizontal section on the line y-y/ of Fig. l, a part of the floor being removed to show the arrangement of the several passages. Fig. 3 is a detail section of the arch of one of the furnaces on the line 3 3 of Fig. 4f. 'Fig 4 is a vertical section on the line 2 2 of Fig. 2. Fig. 5 vis a horizontal section of a modification.

Corresponding and like parts are referred to in the following description, and indicated in all the views of the drawings, by the same reference characters.

The kiln is of circular outline and embodies a wall 1 and a top 2, the latter being of dome shape and having a centrally disposed opening which is closed by means of a cover 3. A plurality of furnaces 4 are arranged about the wall 2 and are spaced apart an equal distance. The furnaces 4l communicate by means of passages 5 with a centrally disposed flue 6, which terminates a short distance from the top 2. The flue 6 is subdivided by means of intersecting partitions 7 into a plurality of passages 8, the latter terminating a short distance from the upper end of the flue 6. The passages 5 communicate at their inner ends with the passages 8 of the flue 6. By providing a number of vertical passages 8 the drifting of the hot air from one furnace to another is prevented and a positive discharge of the hot air from each of the furnaces into the upper portion of the kiln is assured. The spaces formed between the furnaces 4 and passages 5 are subdivided into a plurality of passages 9, which communicate with an annular passage 10 located in a lower plane than the series of passages 5 and 9. The annular passage l0 is in communication with stacks 11 by means of horizontal passages l2. It is preferred to interrupt the annular passage lO at` regular intervals by partitions, the purpose being to prevent any countercurrents and to insure a positive draft through the kiln and the stacks l1. The floor of the kiln is preferably composed of bricks or` tiles, the latter being placed close together over the arches of the furnaces and the passages 5 and spaced apart over the passages 9, thereby admitting of the hot air from the kiln passing downwardly through the openings of the floor into the passages 9, thence into the annular passage 10 and out through the stacks 1l by way of the passages 12. The central portion of the floor adjacent the flue G is solid, thereby preventing over burning of the ware when the kiln is in operation, the ware adjacent to and near the fine 6 being burnt by radiation and partly by direct circulation of the hot air.

In the modification shown in Fig. 5 the stacks 13 are formed in the wall of the kiln and communicate at their lower ends with a passage 14., which in turn is in communication with the passages 9. The construction ofk the kiln otherwise is substantially the same as hereinbefore described. lVhen the kiln is in operation the ware to be burned is piled upon the licor about the fiue 6 and the hot air from the furnaces after discharging from the upper end of the flue 6 is deflected and caused to pass downwardly through the ware into the passages 9, thence into the passage 10 and out through the stacks l1, the draft in the latter being such as to insure a circulation of the hot air in the manner stated and in the direction indicated by the arrows. After the ware has been properly burned the cover 8 is removed to admit of the hot air escaping directly from the top of the kiln, and the iires are permitted to die out and the incoming air through the furnace is heated so as to prevent chilling of the ware and a consequent cracking or a too rapid cooling thereof. It is observed that the construction is such as to assure an eoualization of the heat throughout the inin the floor thereof, said kiln having the terior of the kiln, with the result that the floor adjacent the central flue and for a 40 ware is uniformly burned. The arrangeshort distance therefrom made solid and ment of the furnaces and hot air passages is having the portions of the floor extending 5 such as to admit of a minimum amount'of over the passages connecting the furnaces fuel being required in the operation of the with the flue likewise made solid. kiln. The centering of the hot air flue 6 2. A kiln of the character described eom- 45 results in a maximum amount of floor space prising a substantially circular' wall, a dome as well as uniformity in the distribution of shaped top closing said wall and having a 10 the hot air. centrally disposed opening adapted to be From the foregoing description, taken in closed by means of a cover, a centrally disconnection with the accompanying drawposed flue extending upwardly from the bot- 50 ings, the advantages of the construction and tom of the kiln within a short distance of of the method of operation will be readilyT the top thereof and subdivided into a pluapparent to those skilled in the art to which rality of vertical passages, furnaces disposed the inventio-n appertains, and while I have equidistant about the kiln and having comdescribed the principle of operation of the mimication with the passage o-f the line, an 55 invention, together with the device which I annular passage located in a lower plane now consider to be the embodiment thereof, than the passages connecting the furnaces I desire to have it understood that the device with the vertical flue, passages arranged besliown is merely illustrative, and that suoli tween the furnaces and having connection changes may be made when desired as are with the said annular passage, the floor of 60 within the scope of the claims appended the kiln being solid over the passages conhereto. neet-ing the furnaces with t-he flue and adja- I-Iavinof thus described the invent-ion what cent the flue and for a short distance thereis claimed as new, is from, and having openings establishing com- 1. A kiln of the character described havmunication between the interior of the kiln 65 ing a centrally disposed flue subdivided into and the passages in communication with the a plurality of vertical passages, furnaces annular passage, and stacks arranged about disposed equidistant about the kiln and havthe kiln andhaving their lower ends in con ing communication with the passages of the munication with the said annular passage. said flue, the kiln having passages below the In testimony whereof I affix my signature floor in communication with the interior of in presence of two witnesses.

the kiln through the openings formed in the said floor, and stacks grouped about the kiln CURNEALUS HOOK' and having their lower ends in communica- `W'itnesses: tion with the passages communicating with Mrs. C. HOOK, the interior of the kiln through the openings T. D. YOAKEM.'

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

washington, D. c. 

